Drawing Tube Blueprint Case DEWEL Telescoping Art Tube Large Plastic Black Storage Tube Expands From 24 To 40 Inches Plastic Waterproof And Light Resistant Poster Tube With Strap Telescoping carrying case could extend from 24 inches to 40 inches in length, and the diameter is 3.15, so handle various poster dimensions. Easy Interlock Design: The tube could be adjusted to 10 different lengths, easily and firmly lock your favorite poster in the tube case safely. This telescoping document carrier keeps your posters, artwork, and documents from becoming bent or creased while you're on the go. Waterproof, hard, durable storage tube leaves your mind at ease when traveling with precious documents or art. The adjustable shoulder strap makes it easy for anyone to carry this poster transport tube.